Getting Data Into Excel
To access the API from Excel, go to the Data tab and click the "Get Data" option. Go down to "From Other Sources" and over to "From Web".

I suggest we are going to want to import data one coin at a time so that the relative cell index doesn't change when the coin rank based on market cap changes. There are other, more complicated, ways around this, but this is an easy method to use. Let's get some data for Ethereum. If you want a certain fiat conversion, you need to use one of the ticker URLs that had /?convert=EUR at the end:

One of the things you would like to do is rename the Query.

Now we need to hit the "To Table" convert option:

Leaving these options at their defaults is good.

I highly recommend renaming the entry to the name of the coin, underlined in red. Then we need to click the button with two outward arrows, squared in blue:

Here we can check off which of the stats we actually want in our sheet. I like to create a separate page in my sheets file where I put tickers for all the coins I'm tracking, so import everything here since it's not going to get in the way.

Now just hit "Close & Load" and your live data query will be put into a new sheet.

This post is to large, therefor see next post to continue the rest of this small tutorial.
The rest of previous post:

From here, I go to the Design Tab and select a more aesthetically pleasing style.

Once you're done moving your data where you want it and styling it out, we need to click in the query field and hit ctrl-a to select the entire thing. On the Design Tab, select the Properties option.

Click the "Query Properties" button

Here you can check off "Refresh every" and "Refresh data when opening the file" options. The fastest you can refresh your data is every 1 minute.

Now hit OK a couple times and you're all set!

Just repeat this process for each coin you want to track, I know - it can take a while, but then they sky is the limit for what kind of analytics you create to help you keep your portfolio going.